Low temperature heating systems
Weishaupt Thermo Unit G

Compact heating unit for houses and apartment buildings

Reliable, efficient, long-lasting: The body of the Weishaupt Thermo Unit G boiler is cast in one piece. House owners value the heating unit, which has been proven 100,000 times, as a long-lasting partner and as an exemplary and reliable energy-saver.


  • Excellent heat output: The vertically arranged boiler body and the highly efficient heating gas and hydraulic heat exchanger make for a uniformly high efficiency.
  • Low emission levels: The boiler geometry improves the flue gas recirculation and thus reduces emissions.
  • Great versatility: The Weishaupt Thermo Unit G can be fired by either an oil or gas burner
  • Simple operation: The Weishaupt Thermo Unit G is controlled using a mobile control unit.
  • Fully suitable for condensing units: Using the Weishaupt condensing module, the efficiency increases to a standard efficiency of up to 102 percent Hi (96.2 % Hs).
  • Long life: The boiler is made of hard-wearing cast iron. The vertical arrangement of the components prevents condensation in the boiler area. Residues can easily be removed during servicing.
  • Low space requirement: The boiler requires only around 0.5 sq m of floor area.
  • Fuel: Weishaupt oil and dual fuel burners are suitable for use with fuel oil EL and low sulphur fuel oil EL to DIN 51603-1, as well as fuel oil EL with additives of up to 10 % bio components to DIN 51603-6, fuel oil EL A Bio 5 and 10.


For further information please contact your nearest heating specialist for Weishaupt products.

Weishaupt. That's reliability.